Flushing and cleaning device



3 Sheets-Sheet 2 LAJ April 29, 1930.

A. WERTZ FLUSHING AND CLEANING DEVICE F iled' March 19, 1927 April 29, 1930, L. WERTZ FLUSHING AND CLEANING DEVICE Filed March 19, 1927 3 Sheets-Sheet 5 1 40 low cost.

Paw Apr. 29,1930

PATENT;- OFFICE AUsrIN L. WERTZ, or CLEVELAND, OHIO rnusnme AND CLEANING nnvrcn Y Application filed March 19, 1927. Serial No. 178,825.

, This invention relates to a flushing and cleaningdevice especially adapted for use in cleanin and flushingout the'transmissions and difierentials of automobiles. The main object of the invention is to provide a flushing and cleaning device for the purpose set forth inwhich the oil or lubricant is removed from the transmission or differential by means of an injector action and in a 13 mfanner to be more fully described hereina ter.

which a flushing oil, such as kerosene, is de-' is livered to the transmission for the purpose of loosening and removing all of the lubricant which might adhereto. the gears or housing and which is provided with a suction line for removing the dirty and diluted lubricant.

A further object of the invention is to provide a flushing device in which the dirty lubricant removed from the transmission or diiierential is returned to the flushing device and'which is provided with means for filter- 5 ing and separating the solid particles contained in the dirty lubricant.

' A further object of the invention is toprovide a'device of the character described in whichthe discharge pipe leading from the so pump is provided with a vertically disposed portion in whichis arranged the injector, the delivery end of whichv is directed downwardly whereby the suction obtained in the return line is matoriallyincreased.

to provide a flushing device of jtheicharacter described which is'eflicient in operation, compact and rigidin construction and well adapted for quantity productionat comparatively Further invention will appear as the description pro ceeds and by're erenc'e to theaccompan ing drawings in which, Fig. 11 is ajview-in fi 'ont elevation of the preferred einbodiinentiofmy 2f-is'ja' verticalsectional view" or io'f m' Fdevice; Fig. 3 is {the injector Fig... i 4'15 9. top plan view lofthetank-and its associated parts;{Fig. 5 isa horizontal'sectional invention; showing their! a verticalsectioiial view'o A further object of the invention is to prov .vide a device of the character described in a to a point adjacent the bottom thereof. A fil- A'Ssu further object or the invention is .=,outlet 16. The lower end of the T-connection and 1morelimite'd-objectsi the, 14 adjacent the restricted outlet 16 is some view on the line 55 of Fig. 2; Fig. 6 is an enlarged detail vertical sectional View of the deflecting member secured to the bottom end of the discharge pipe; and Fig. 7 is an enlarged detail vertical sectional view of the control valve for the suction return line.

Referring "now to the drawings, the numeral 1 designates a tank, which may be -a standard size drum, and which is mounted in a truck 2 in any suitable manner and secured thereon by a strap 2 so that the same may be moved about from place to place. Secured over the tank 1 in any suitable manner is a cover 3 on which is mounted an electric motor 4 having a shaft 5 projecting therefrom. Also. mounted on the cover 3 is a pump 6 the intake side of which is connected with the interior of the tank 1 by-means of a pipe 7 leading ter 7 surrounds the lower end of the intake pipe 7. Leading from the discharge sides of the pump 6 is a discharge pipe or conduit 8 having a horizontally disposed portion and a downwardly directed portion as shown. most clearly in F igs. 1 and 2.

Theicover 3 is provided with an annular opening in which is supported a container 9 having an annular'flange 10 thereon which rests on .an annular shoulder 11 formed on the cover .3; The container 9 is provided with one or' more overflow openings 12 in the circumferential wall thereof'and extending over the openings 12 is a screen or filter 13, the purpose of which will hereinafter appear. Connected with the downwardly directed portion of the pipe-8 is aT-connection designated generally 1.4.] Threadedly secured within the T-connection 14 is an injector nozzle having a restricted downwardly directed what v conical in'shape as shown at 17so as y to producean injector action. Leading from v the T-connection14 at a-point slightly above the lower end of thenozzle' 15 is a connection 18-to which is connected a flexible conduit 19 having a valve controlled nozzle 20 at the discharge end' thereof." -.Threadedlyconnected tothe lower endof the T connec'tion' l lfis a "pipe2 1 toIthelower endof which is secured n injector, a second connection. leading. fromv said discharge conduit between said pump and injector, and means carried by the lower end of said discharge conduit for preventing undue agitation within said container. I

3. A device of he class described .compris-' ing a tank, a cover'for said tank, a pump carried by said cover, an intake pipe for said pump leading into said tank to a point adj acent the bottom thereof, a container arranged within said tank and supported by said cover and having one or' more openingstherei n connecting with said.tank, a, discharge con- 'duit leading from said pump and delivering into said containensaid discharge conduit having a vertically disposed. portion, an injector arranged within said vertically disposed portion and discharging downwardly,

a connection leading from said vertically disposed portion and in open communication with said injector, a second connection leading from said discharge conduit between said pump and injector.

4. A device of the class described cojmprismg a portable tank, a cover-for said tank, a

. container arranged within said tank and supported from said cover, a pump carriedby said cover, an intake pipe for said pump leading into said tank, a discharge pipe leading from saidpump and discharging into said container and having a vertically disposed T-connection therein, an injector arranged within said T-connection and dischargingdownwardly, a pipev leading from said T-connection and having a nozzle at its opposite end adapted for insertion into an automobile transmission, a second pipe leading from said discharge pipe between said pump and T-connection, said container having one or more openings in its sidewalls for efl'ecting communication between said container and tank when the liquid in said-container reaches a predetermined level, and means for preventing undue agitation within sald con- 5. A flushing device of the class described comprising a portabletank, a cover for said one or more overflow openings in said contamer and a filtermg medium covering said opening or openings. v

V 6. In a flushing device of the class'described, the combination of a tank, a pump tor.

having an intake pipe leading into said tank, a discharge pipe for said pump also leading into'said tank, aj'container supported within said tank andhaving communication with the interior thereof and into which said discharge pipe; delivers, an injector in said discharge pipe, a conduit leading from said discharge pipe at-a point adjacent said'injector and a second conduit leading from said discharge pipe b'etween' said pump and injec- 7. In a -flushing device oithe-class described the combination of a tank, a pump mounted on said't'ank and havingan intake pipe connected with the interior of said tank wardly, a conduit leading from said discharge pipe at a point adjacent said injector,

a second conduit leading from said discharge pipe between said injector and pump, a motor carried by said tank, the. shaft of-the motor being disposed in axial alignment'with the shaft of the pump and a-direct drive between the shaft of the motor and the shaft, of the I pum 8. comprising a tank, a cover for said tank, a pump carried by said device, an intake pipe for said pump'connected with the interior of said tank, a-cOntainer arranged within said tank and-having communication'with the interior thereof,-a discharge conduit leading from said pump and delivering into said container, said discharge'conduit having an injector therein, a connection leading 'from said discharge conduit at a point adjacent said injector and a second conduit leading from said discharge pipe at a point between said pump and injector.

9. A flushing device of the class described comprising a portable tank, a coverfor said tank, a container arranged within said tank and having communication with the interior thereof, a pump carried by said tank, an intake pipe for said pump connected with the A flushing device of the class described and a discharge pipe leading therefrom and 1 connected with the interior of said tank, an

injector arranged within said discharge pipe and having its discharge end directecPdowninterior of-said tank, a discharge pipe'leading from said pump and, delivering into said container and having a vertically disposed T-con-nection therein, an injector arranged within said T-connect1on and dischargmg downwardly, a pipe leadingfrom said T-connection at a point adjacent said injector, a

second pipe leading from said discharge pipe at a point between said pump and T-connection and means for operating said pump. 10. A flushing device of the class described comprising a portable tank, a cover for said tank, a'container supported within said tank and having communication with the interior thereof,a pump having an intake pipe, connected with'the interior of said tank, an out- Q Pi P for S having a vertically 3 I disposed portion and delivering into said container, an injector arranged within said vertically disposed portion and having its discharge end directed downwardly, a conneciion leading from said vertically disposed portion at a point adjacent said injector, a second connection leading from said discharge pipe between said pump and injector, and means for operating said pump.

11. A flushing device of the character set forth comprising a tank having a supply chamber for flushing oil and a delivery chamher into which dirty oil is deliver'ed,'a pump having an inlet pipe connecting with said. supply chamber and a dischar e pipe deliverlng into said delivery chamber, an injector arranged within said discharge pipe, a connection leading from said discharge pipe at a point between said pump and injector,

, a second connection loading from said dis- 13. A flushing device as set gforth in claim 11 having means for, filtering the oil which passed from said delivery chamber into said supply chamber.

14. A flushing device of the class described comprising a portable tank, acover for said tank, a container arranged within said tank and supported from said cover, rar pump, a motor for driving said pump and a direct drive between said motor and1 pump,- an intake pipe for said pump connected with the interior of said tank, a discharge pipe for said pump delivering into said container and having a vertically disposed portion, an injector arranged within said vertically disposed portion, a conduit leading from said discharge pipe at a point adjacent said injector, and having a nozzle at its outer end adapted for insertion into an automobile transmission, a second conduit leading from said discharge pipe at a point between said injector and pump and provided with a nozzle at its outer end, said container having one or more openings therein for connecting the same with the-interior of said tank and means for preventing undue agitation of the contents of said container.

15. In a flushing device of the class described the combination of a tank, a pump carried by said tank and having an intake pipe connected with the interior of said tank and a discharge pipe leading therefrom and connected with the interior of said tank, an injector arranged within said discharge pipe and having its discharge end directed downwardly, a conduit leading from said discharge pipe at a point adjacent said injector,

a second conduit leading from said discharge pipe between said injector and pump, a motor carried by said tank, the shaft of the motor being disposed in axial alignment with the shaft of the pump and a direct drive between he shaft ofthe motor and the shaft of the um lGP'A flushing device comprising a tank 7 for a cleaning fluid, a partial cover for said tank having an opening therein, a strainer receptacle supported by said partial cover and extending downwardly therefrom through said opening and into said tank, a top cover positioned above said partial cover, motor operated pump means mounted on said top cover, a conduit connected to said means for withdrawing cleaning fluid from a point adjacent the bottom of said tank and discharging it into said receptacle, and an ejector in said conduit for withdrawing a fluid from without said tank and discharging it into said receptacle.

17. A flushing device of the class de-- scribed, comprising a portable tank serving as a container for a cleaning fluid, a receptacle removably supported in said tank, said receptacle'having strainer openings above the bottom therefor, a pump, motor .means for driving said pump, an inlet conduit for said pump having an inlet opening adjacent the bottom of said tank, means operated by said'motor means and pump to supply cleaning fluid from said tank to a part to be cleaned and to withdraw the cleaning fluid and collected impurities from said part, and means to conduct said impure cleaning fluid into said receptacle, whereby the impurities may settle to the bottom of said receptacle and the relatively pure cleaning fluid flow therefrom into said tank through said strainer openings.

In testimony whereof, I hereunto aflix my signature.

' AUSTIN L. WERTZ.

Patented Apr. 29, 1930 PATENT OFFIC WILLIAM B. wn'sco'r'r, or BOSTON, MASSACHUSETTS, ASSIGNOR '10 RUBBER LATEX RESEARCH CORPORATION, or BOSTON, MASSACHUSETTS, A CORPORATION or MAS- SAGHUSETTS DRY MOLDING No Drawing.

This invention relates to improvements in dry molding; and it comprises a method of obtaining rubber compositions in granular, vermiform, cordiform, shredded or other divided condition adapted for assemblage in a mold and of molding to the shape desired with subsequent curing wherein granular fillers. short cords or fibrous masses are treated with a small amount of properly diluted commercial -latex vcontaining some proteid protective colloid, such as hemoglobin, to obviate coagulation and also to obviate subsequent stickiness after drying, there being advantageously also an addition of zinc oxid, the treated material is dried to form an agglomerated mass and the mass is then comminuted or shredded to put it in divided form suitable for the stated dry molding operation; and it also comprises certain products of said method; all as more fully hereinafter set forth and as claimed.

In the rubber art it is a desideratum to produce a fine particled form of rubbercontainin materials, such as a dry granular or loose brous rubber-containing material, which may be kept and stored and be conveniently assembled in weighed or measured amounts and directly molded into shape under heat and pressure in the usual way of vulcanizin'g. .F or various reasons, no very practical method of obtaining this result has been provided in the art. For one thing, such a material would expose large areas of rubber to air and it is thought by those familiar with the rubber art that rubber so exposed on storage may undergo undue oxidation. By the present invention however I am able to provide such a loose small grained or small particled material and I have found the presumed liability to deterioration on exposure to air to have no validity. The present invention is particularly applicable to making hard compacted articles from loose granular or fibrous materials, the final article, in the case of asbestos, consisting of asbestos fiber with a small amount of welldistributed rubber bonding the fibers together; this rubber being either soft cured or hard cured. In this invention, I use latex as a source of much, most, or all of the bond- Application filed December 10, 1927. Serial No. 239,215.

ing rubber. Similarly, hard and compactart1cles can be made from bulk loose cord containing material; or from a granulated or pulveriform composition of rubber and granular material. The present invention is particularly useful where the proportion of rubber is low.

Because of costs and for other reasons, it

is sometimes desirable to make articles of asbestos, with or without other mineral matters, carrying as little as 6 to 8 per cent of rubber. This amount, if properly distributed, 1s sufiicient for bond. It is impractical by present day processes however toincorporate more than about to 40 per cent of asbestos into a rubber composition without using a rubber softener. It is, however, possible by the use of certain expedients to get these low proportions of rubber into an as bestos composition by the aid of diluted latex. Commerc1al latex is at once coagulated by commerclal asbestos, which prevents intimate incorporation of the two in the way here deslred. The asbestos may be freed of this coagulatlve property by extracting with acid and washing; but even so, the mechanical manipulation incident to working together large amounts of asbestos and small amounts of latex may, again, produce coagulation. This can be avoided by the use of a protective colloid.

A further difi'iculty, however, develops in the moldmg of this composition, since a mix- Qure of asbestos and latex containing only 6 "to 8 per cent rubber is apt to dry to a ro cklike hardness and to shrink and warp. In

some cases, the pressure required to obliterate voids and make a com act ro erl toured final article fron i the ma feri ls e sultlng from drying, is of an order of magmtude much greater than is usual in rubber processes. Often, there is a compression factor of 3:1 to 1.5: 1. But I have found these hard masses may be readily broken down to granular or powder form and be then molded mto shape with no more pressure than is usual in the rubber art. The dry mass breaks down readily with suitable apparatus. In breakmg down, I find it better to use a shredding devlce, effecting disintegration by a toothed arrangement adapted to pull the material apart. Crushers or grinders, involving impact disintegration, are not so suitable. While the dry slabs are often so hard as to be resonant, they are quite porous; the rubber-carrying fibers being to a great extent separated by voids left in evaporation 0t water from the dilute latex used.

The fineness of disintegration desirable is determined partly by the orlginal length of fiber and partly by the degree of flow needed in molding. Thick walled products can be satisfactorily made from rather coarse granules; while, for thin walled products, such as battery boxes and the like, the granules should be relatively fine. Some times I granulate and then separate different size grains, using eachfraetion for special purposes. Very fine material, I sometimes remove by sifting and use as such or return to another wet batch.

In drying the slabs, I try not to have the temperature exceed 150 F. and employ conditioned air. In drying, the molsture left should be less than the normal water of condition of any hygroscopic materials Whlch may be present. It is somet mes convenient to effect a final complete drying of the granulated material by tumbling in a rotary drum in a current of conditioned air. This yields a loose granular material ready for molding. Sometimes, however, I wet-mold my mixture into slabs, completely dry these slabs and keep the material in slab form until it is wanted-for use, granulatlng ust before use. This has the convenience that the slabs may be putinto stock and only granulated when wanted, thereby shortening the time during which the material is held in-granular form exposed to the air.

In drying the slabs, the degree of poros ty naturally influences the drying trme cons1derably. For example, for making 2-inch paving blocks, the equivalent material in the slab form, may be made occupylng 5 t1m es this volume, i. e., as a 6-inch slab. This will ordinarily require a drying perlod of about 48 hours, at about 150 in condltloned air of per cent humidity, while the same amount of material in the form of a lunch slab will require nearly double the drying time. But if the slabs be dried on warm shelves in vacuo, the drying tlmes w1ll bereversed, because of the better heat conduct vltv of the less porous block. Equal drying may be effected in about half the tune by the use of vacuum rather than of conditioned air, but the expense is higher. v I

As so far stated, the final articles belng produced by simple drying have a bond of gelled rubber, which I regard as more advantageous than a bond of coagulated rubber. However, when coagulated rubber is deslred 1t can be obtained by the expedient of hnutmg the amount of protective collo1d present, so

that the rubber of the latex slowly coagulates during the various operations. Even so, however, there is the disadvantage that the reticulate nature of any coagulum, however fine the coagula, tends to localize the resulting rubber more or less into specks or nodules, rather than the thin fiber coating'films here desirable. With thislocalization, more rubber is needed to efiect bond. Coagulation rubber is better adapted for articles containing much more rubber; say, to per cent, or more. ,7

WVhat has been said regarding asbestos applies also to composition made with granular mineral fillers, such as zinc oxid, whiting, talc, etc. It also applies, with some modification, to the manufacture of compact and dense articles with the aid of short cords and threads; for example, the cords coming from the comminution of old tire stock. Cords treated with diluted latex do not dry down to rocky products; and there is no great difiiculty in compressing the agglomerated dried material, as it comes from the drier in rough molded form, to the final shape and density required. Nevertheless, it is convenient, and I regard it as within the present invent-ion, to produce a fine fibrous material in loose dry form which can be used by weight or measure to make individually molded shapes.

As stated, in the production of molded shapes from asbestos under the present invention, it is desirable to have a protective colloid present to prevent or hinder coagulation; and as this colloid, I find hemoglobin the most advantageous. Pure vegetable fiber, such as cotton cords, does not coagulate ammoniacal latex, but, on the other hand, re-

claimed cord from old tires does have a coag- V ulative' influence, because of the presence of particles of rubber. Hemoglobin is therefore advantageous in using tire scrap for this reason; and it is also advantageous, even with clean cotton, in that it prevents stickiness or tackiness of the dry fiber, thereby much facilitating shredding, and assemblage. Commercial latex often contains a creamy portion consisting of finely divided coagula particles and these are filtered out by the cotton threads and form an exterior sticky layer. The presence of hemoglobin obviates this tackiness, even with poor latex.

While other protective colloids may be used in lieu of hemoglobin, hemoglobin has the advantage that in a particular dry condition. it is cured by heats and pressures like those used in vulcanizing rubber, and its use therefore contributes to the final bond.

In using latex on cords, the non-creamy, or normal, portion of the latex enters the capillaries and produces a rubber impregnation throughout. Sometimes,impregnationinthis senseis not wanted and in this case, the cords need not be impregnated with the rubber; they may simply receive a firmly adhering 

